Patent Number: US 5363407 A
Filing Date: 1992-09-02
Publication Date: 1994-11-08
Status: Expired – Lifetime
Current Assignee: BlackBerry Ltd / Ericsson Inc / General Electric Co
Applicants: General Electric Co.
IPC/CPC Classifications: H04B1/04;;H04B15/00
Patent Attorney
Lawrence P. Zale